Needle bar for full-fashioned machines



C. F. MEYER.

NEEDLE BAR FOR FULL FASHIONED MACHINES.

APPLICATION FILED .IAN.23.1920.

Patented. June 27, 1922.

STAT-ES PATENT OFFICE. J

CHRISTIAN F. MEYER, 0F READING, PENNSYLVANIA, ASSIGNOR 'IO TEXTILE MACHINE WORKS, OF WYOMISSING, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

NEEDLE BAR Eon FULL-FASHIONED MACHINES.

To all whom it may concern:

Be it known that I, CHRISTIAN F. MEYER, a citizen of the United States, residin at Reading, in the county of Berks and S tate of Pennsylvania, have invented certain new and useful Improvements in Needle Bars for F ull-Fashioned Machines, of which the following is a specification.

My invention relates to full fashioned knitting machines, and particularly to improved means for maintaining accurate positioning of the movably-carried series of needles with relation to the cooperating sinker and divider mechanism, as fully set forth in connection with the accompanying drawing; the novel features being specifically pointed out --in the claims.

Fig. 1 is a partial cross-sectional view of a well-known-type of full fashioned knitting machine showing the relation of my 1mproved needle-bar construction to the immediately cooperating parts."

Fig. 2 is a front elevation of a pivotally carried needle-barembodying my improved construction; the needle-bar shaftand carrying arms thereon being shown.

Fig. 3 is an enlarged rear elevation of the same; Fig. 43 is a corresponding plan view, indicating also the cooperating sinker and divider mechanism; and Fig. 5 is a corresponding end view.

In the machine indicated, the fixed center bed 10 carries the sinker heads 11 arranged in parallel relation to the fixed slur cock guide bar 13, so that uniform operative action upon the usual sinkers and dividers is insured, as required to form uniform loops in the laid thread. These loops however are bent around successive needles 15 of the series carried by needle bar 16, and very accurate positioning of all of these needles with respect to the cooperating loop forming parts already referred to, is essential to the producing of the uniform looping required in high grade product.

The needle bar however is necessarily movable so as to carry its whole body of needles up and down, and also in and out relative to the needle-closing presser plate '17 of the sinker head; the up and down movement being effected as indicated by the lever 20 on needle bar shaft 22; and the in and out movement by rocking the bar upon the pivot end 21 'of said lever through a cam.-

Specification of Letters Patent. Patented J 11119 27, 1922 Application filed January 23, 1920. Serial No. 353,503. i

ably, instead of fixedly, mounted needle bar,

is subject to internal structural strains which in the natural seasoning of the cast metal commonly employed, frequently causes a warping or change of shape in the considerable length thereof suflicient to quite seriously affect the original careful alinement of the long series of needles. Recognizing the practical seriousness of this difiiculty and the essential causes thereof, the primary object of my invention is to provide for easy correction of imperfect alinement as may be required, and I accomplish this by the improved detail construction illustrated.

Instead of extending integrally the full length of the machine as do the slur cock bar 13 and center bar 10, the needle bar is ordinarily formed in shorter lengths each adapted to serve as illustrated for two of the series of knitting sections which unitedly form the determined total length, these shorter needle bar parts being all carried and jointly operated by the common needle bar shaft 22 through a series of levers 20 on said shaft, as previously described. In my improved construction each of these needle bar lengths comprises a fixed base portion 16 which is carried as usualby the lever 20, and one .or more (preferably two as shown) separately formed needle-clamping portions 30; each of the latter forming a knitting section supported upon the upper straight-line surface of the base portion 16, and being independently adjustable upon the latter into or out of parallelism with the fixed slur-cock bar 13.

As shown the pivotal connection of the base portion 16 of the needle bar, to the end i of the carrying lever 20, is made adjustable as usual, so as to permit of properly setting said portion bodily relative to the fixed slurcock bar 13 and the intervening movably mounted sinkers and dividers; so that I have found it practicable to secure in a simple manner the needed nice adjustment of the needle-clamping portion or portions 30 upon the'base portion 16, by providing the latter with a midway pivot-pin connection 31 to the base portion, on which pivot, the needle clamping portion is merely turned for adjustment, by means ofend set-screws 32,32 engaging brackets 33, 33 on the base portion,

so as to set the-line of needles exactly parallel with the fixed slur-cock bar 13 and pre'sserplate edge 17 preliminary to rigidly securing the needle-clampingportion to the base portion. The clamping bolts 35, 35

' provided for thus rigidly securing the adjusted needle-clamping portion 30,

7 pass through enlarged openings 36, 36 which per;

. mit of anyre'quired adjusting movements" (The separated needle-clamping: portions 30,0an be "manufactured economically, and

their convenient independent adjustability upon. the-base portion of the bar enables the positivelycorrect; relation .to the fixedly of the needle carrying mech "What I claim is:

" having a fixed slur-cock bar and reciprothereon into aralle1ism;while retained in ,;fixed' longitu inal position'thereon.

' I eating sin kers'and dividers; a movable needle-'carrying bar comprismg a rigid base clamping "portion plvotally mounted upon portion and ,a separately formed needlesaid base portion so as tolbe adjustable eating sinkers and dividers g a movable needle-carrying ban comprising a rigid base portion and a plurality of needle-clamping portions each-intermediately pivoted to said base portion and independently adjustable into parallelism while retained in fixedlongitudinal position thereon.

3. In. a full fashionedknitting machine comprising a fixed slur-cock bar and reciprocatively movable sinkers and dividers; a movable needle-carrying bar made up of a rigid base portion, a separately formed needle-clam 1n portion movabl seated u on 5 g y p parallelism with saidsinkers I comprising a fixed slur-cock bar and reciprocatively movable sinkers and dividers; a

movable'needle carrying'bar made. up of a rigid base portion and a plurality of needleclamping portions each held in fixed longitudinal position'th'ereon, and means for in dependently setting said longitudinal fixed needle-clamping; portions into and out of parallelism with said sinkers and dividers.

\ p v In testimony whereof I afiix my signature. 2..Ini a full fashioned 7 itting machine having a fixed slur-cock arand' recipro- CHRISTIAN F. 

